351930420 has 60 divisors (see below), whose sum is σ = 1104023844. Its totient is φ = 93847680.

The previous prime is 351930419. The next prime is 351930451. The reversal of 351930420 is 24039153.

351930420 is a `hidden beast` number, since 351 + 9 + 304 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 133541136 + 218389284 = 11556^2 + 14778^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 107001 + ... + 110240.

Almost surely, 2^351930420 is an apocalyptic number.

351930420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

351930420 is an abundant number, since it is smaller than the sum of its proper divisors (752093424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351930420 is a wasteful number, since it uses less digits than its factorization.

351930420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217262 (or 217251 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 351930420 is about 18759.8086344184. The cubic root of 351930420 is about 706.0231409621.

Adding to 351930420 its reverse (24039153), we get a palindrome (375969573).

The spelling of 351930420 in words is "three hundred fifty-one million, nine hundred thirty thousand, four hundred twenty".